Effects of radial losses of particle and energy on the stability of detachment front in a divertor plasma

Satoshi Togo, Makoto Nakamura, Yuichi Ogawa, Katsuhiro Shimizu, Tomonori Takizuka, Kazuo Hoshino

Research output: Contribution to journalArticle

Abstract

Operation under partially detached divertor (PDD) plasmas is a hopeful way in order to reduce the divertor heat load in the next generation tokamaks. The physical mechanism of PDD plasmas, however, has not fully been understood yet. We have studied them with a multi-layer one-dimensional divertor model. The PDD plasmas are successfully reproduced by introducing a neutral gas puffing model. Effect of the cross-field heat transport on the PDD plasmas is investigated. It is found that cross-field heat transport both in the SOL region and in the divertor region prevents detachment fronts from moving upstream in a detached flux tube.

Original languageEnglish
Article number2403087
JournalPlasma and Fusion Research
Volume7
Issue numberSPL.ISS.1
DOIs
Publication statusPublished - 2012 Dec 1
Externally publishedYes

Fingerprint

detachment
energy
heat
neutral gases
upstream
tubes

Keywords

  • Cross-field heat transport
  • Detachment front
  • Divertor heat load
  • Neutral model
  • Partially detached divertor plasma
  • Plasma fluid model
  • Thermal stability

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Effects of radial losses of particle and energy on the stability of detachment front in a divertor plasma. / Togo, Satoshi; Nakamura, Makoto; Ogawa, Yuichi; Shimizu, Katsuhiro; Takizuka, Tomonori; Hoshino, Kazuo.

In: Plasma and Fusion Research, Vol. 7, No. SPL.ISS.1, 2403087, 01.12.2012.

Research output: Contribution to journalArticle

Togo, Satoshi ; Nakamura, Makoto ; Ogawa, Yuichi ; Shimizu, Katsuhiro ; Takizuka, Tomonori ; Hoshino, Kazuo. / Effects of radial losses of particle and energy on the stability of detachment front in a divertor plasma. In: Plasma and Fusion Research. 2012 ; Vol. 7, No. SPL.ISS.1.
@article{89e827e25cda47bbbb89c6c0b5def06f,
title = "Effects of radial losses of particle and energy on the stability of detachment front in a divertor plasma",
abstract = "Operation under partially detached divertor (PDD) plasmas is a hopeful way in order to reduce the divertor heat load in the next generation tokamaks. The physical mechanism of PDD plasmas, however, has not fully been understood yet. We have studied them with a multi-layer one-dimensional divertor model. The PDD plasmas are successfully reproduced by introducing a neutral gas puffing model. Effect of the cross-field heat transport on the PDD plasmas is investigated. It is found that cross-field heat transport both in the SOL region and in the divertor region prevents detachment fronts from moving upstream in a detached flux tube.",
keywords = "Cross-field heat transport, Detachment front, Divertor heat load, Neutral model, Partially detached divertor plasma, Plasma fluid model, Thermal stability",
author = "Satoshi Togo and Makoto Nakamura and Yuichi Ogawa and Katsuhiro Shimizu and Tomonori Takizuka and Kazuo Hoshino",
year = "2012",
month = "12",
day = "1",
doi = "10.1585/pfr.7.2403087",
language = "English",
volume = "7",
journal = "Plasma and Fusion Research",
issn = "1880-6821",
publisher = "The Japan Society of Plasma Science and Nuclear Fusion Research (JSPF)",
number = "SPL.ISS.1",

}

TY - JOUR

T1 - Effects of radial losses of particle and energy on the stability of detachment front in a divertor plasma

AU - Togo, Satoshi

AU - Nakamura, Makoto

AU - Ogawa, Yuichi

AU - Shimizu, Katsuhiro

AU - Takizuka, Tomonori

AU - Hoshino, Kazuo

PY - 2012/12/1

Y1 - 2012/12/1

N2 - Operation under partially detached divertor (PDD) plasmas is a hopeful way in order to reduce the divertor heat load in the next generation tokamaks. The physical mechanism of PDD plasmas, however, has not fully been understood yet. We have studied them with a multi-layer one-dimensional divertor model. The PDD plasmas are successfully reproduced by introducing a neutral gas puffing model. Effect of the cross-field heat transport on the PDD plasmas is investigated. It is found that cross-field heat transport both in the SOL region and in the divertor region prevents detachment fronts from moving upstream in a detached flux tube.

AB - Operation under partially detached divertor (PDD) plasmas is a hopeful way in order to reduce the divertor heat load in the next generation tokamaks. The physical mechanism of PDD plasmas, however, has not fully been understood yet. We have studied them with a multi-layer one-dimensional divertor model. The PDD plasmas are successfully reproduced by introducing a neutral gas puffing model. Effect of the cross-field heat transport on the PDD plasmas is investigated. It is found that cross-field heat transport both in the SOL region and in the divertor region prevents detachment fronts from moving upstream in a detached flux tube.

KW - Cross-field heat transport

KW - Detachment front

KW - Divertor heat load

KW - Neutral model

KW - Partially detached divertor plasma

KW - Plasma fluid model

KW - Thermal stability

UR - http://www.scopus.com/inward/record.url?scp=84879102947&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84879102947&partnerID=8YFLogxK

U2 - 10.1585/pfr.7.2403087

DO - 10.1585/pfr.7.2403087

M3 - Article

AN - SCOPUS:84879102947

VL - 7

JO - Plasma and Fusion Research

JF - Plasma and Fusion Research

SN - 1880-6821

IS - SPL.ISS.1

M1 - 2403087

ER -